Inverted

More of a visual state then a style. Inverted buttons are used to visually separate buttons from dark backgrounds. Examples would be messaging heroes or banners which have darker backgrounds. Inverted, filled buttons are considered primary buttons.

Within a Header

Sometimes the best place for a series of actions is in the same area as the title. In these cases, the buttons should be pulled to the right. Within this instance, the button order should be reversed with the most important action to the far right and the least important action to the far left.